Exceptionally high brightness and long lifetime of efficient blue OLEDs for programmable active-matrix display

Chengcheng Wu; Kai-Ning Tong; Kefei Shi; Wei He; Manli Huang; Jie Yan; Siqi Li; Zhaoyun Jin; Xin Wang; Sinyeong Jung; Jingrui Ma; Yixi Zhuang; Rong-Jun Xie; Cunjiang Yu; Hong Meng; Xiao Wei Sun; Chuluo Yang; Yun Chi; Feiyu Kang; Guodan Wei

doi:10.1038/s41377-025-01817-x

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Exceptionally high brightness and long lifetime of efficient blue OLEDs for programmable active-matrix display

Original Articles

- Exceptionally high brightness and long lifetime of efficient blue OLEDs for programmable active-matrix display
- Light: Science & Applications Vol. 14, Issue 6, Pages: 1567-1580(2025)
- Affiliations：
  
  1.Institute of Materials Research, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, China
  2.Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
  3.Department of Materials Science and Engineering, Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon Tong, Hong Kong SAR 999077, China
  4.Institute of Nanoscience and Applications, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
  5.College of Materials and Fujian Key Laboratory of Surface andInterface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, China
  6.Department of Biomedical Engineering, Pennsylvania State University, University Park, PA 16802, USA
  7.Department of Engineering Science and Mechanics, Department of Materials Science and Engineering, Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
  8.School of Advanced Materials, Peking University Shenzhen Graduated School, Peking University, Shenzhen 518055, China
- Author bio：
  
  Cunjiang Yu (cmy5358@psu.edu)
  Chuluo Yang (clyang@szu.edu.cn)
  Yun Chi (yunchi@cityu.edu.hk)
  Guodan Wei (weiguodan@sz.tsinghua.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01817-x
  CLC：
- Received：22 December 2024，
  
  Revised：02 March 2025，
  
  Accepted：06 March 2025，
  
  Published Online：09 April 2025，
  
  Published：30 June 2025
- Accepted：
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Wu, C. C. et al. Exceptionally high brightness and long lifetime of efficient blue OLEDs for programmable active-matrix display. Light: Science & Applications, 14, 1567-1580 (2025).
DOI：

Wu, C. C. et al. Exceptionally high brightness and long lifetime of efficient blue OLEDs for programmable active-matrix display. Light: Science & Applications, 14, 1567-1580 (2025). DOI： 10.1038/s41377-025-01817-x.

摘要

Abstract

Blue phosphorescent OLEDs (Ph-OLEDs) have long faced critical challenges in efficiency

stability and brightness

which are crucial for advanced display. Herein

we introduce two novel Ir(Ⅲ) emitters featuring a 3

6-di(

tert

-butyl)-9H-carbazolyl (tBuCz) substituted tridentate carbene pincer ligand

significantly improving efficiency and stability. The

tBuCz-

-CF3

and

tBuCz-

-CF3

complexes are designed to enhance steric encumbrance and minimize exciton accumulation. These innovations lead to exceptional photoluminescence quantum yields (PLQY) of 98% and an impressive decay rate constant of 7.97 × 10

−1

in doped thin films. The Ph-OLEDs emit blue light with a peak wavelength of 485 nm and CIE coordinates of (0.175

0.446)

exhibiting a peak external quantum efficiencies (EQE) of 31.62% and brightness up to 214

255 cd m

−2

. Notably

they shown minimal efficiency roll-off

retaining an EQE of 27.76% at 10

000 cd m

−2

and 20.58% at 100

000 cd m

−2

. These consistent performances across various brightness levels represent a significant milestone for blue Ph-OLED technology. The devices also exhibit impressive stability

with an operational lifetime (LT

the time taken for luminance to decrease by 50%) reaching 1237 h at 1000 cd m

−2

setting new benchmarks for blue Ph-OLEDs. To enhance the color purity

hyper-OLEDs were developed with a full width at half maximum (FWHM) of 20 nm and the CIEy of 0.233

achieving an EQE

of 29.78% and LT

of 318 h at 1000 cd m

−2

. We also fabricated the active-matrix (AM) blue Hyper-OLEDs with 400 pixels per inch to demonstrate their application in AM displays.

关键词

Keywords

references

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